Mixed Cartesian Feedback for Zero-IF WCDMA Transmitter

Abstract : In this paper, a new adaptive power amplifier (PA) linearization technique is presented. The idea is to consider a classic WCDMA Zero-Intermediate Frequency (Zero-IF) transmitter with a modified Cartesian feedback (CFB) loop. The new transmitter architecture consists of an analog stage including forward I/Q modulator and feedback I/Q demodulator and a digital stage adjusting the phase rotation around the loop. The digital phase-alignment system consumes 2.94 mW (tree time less than a full-analog system).
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Submitted on : Monday, April 18, 2011 - 3:11:52 PM
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Mohamed Abid, Nicolas Delaunay, Bertrand Le Gal, Dominique Dallet, Chiheb Rebai, et al.. Mixed Cartesian Feedback for Zero-IF WCDMA Transmitter. LASCAS 2011, Feb 2011, Bogota, Colombia. pp.1, ⟨10.1109/LASCAS.2011.5750300⟩. ⟨hal-00586824⟩

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